import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Student from '../components/student/Student.vue'
import Class from '../components/student/Class.vue'
import Monitor from '../components/monitor/Monitor.vue'
import Results from '../components/monitor/Result.vue'
import AdminInfo from '../components/AdminInfo.vue'
import Course from '../components/course/Course.vue'
Vue.use(VueRouter)

const router = new VueRouter({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    {
      path: '/home',
      component: Home,
      redirect: '/welcome',
      children: [
        {
          path: '/welcome',
          component: Welcome
        },
        {
          path: '/users',
          component: Users
        },
        {
          path: '/class',
          component: Class
        },
        {
          path: '/student',
          component: Student
        },
        {
          path: '/monitor',
          component: Monitor
        },
        {
          path: '/results',
          component: Results
        },
        {
          path: '/userinfo',
          component: AdminInfo
        },
        {
          path: '/course',
          component: Course
        }
      ]
    }
  ]
})

// // 路由导航守卫，全局前置守卫
// router.beforeEach((to, from, next) => {
//   // to 将要访问的路径
//   // from 代表从哪个路径跳转而来
//   // next 是一个函数，表示放行
//   // next()  放行    next('/login')  强制跳转
//   if (to.path === '/login') return next()
//   const tokenStr = window.sessionStorage.getItem('userId')
//   if (!tokenStr) return next('/login')
//   next()
// })
export default router
